Hi @Jacobson Made,   Since we are still in development with the feature, there hasn't been a huge amount of documentation created just yet.  The simple answer to your question is to think of the Media Replacement control that you create in AE like a container of both Dimensions and Time. The replaceable media control will be defined by whatever media layer or comp you use to create the control. If the layer you use to create an MR Control is is 1920 x 1080 and 10 seconds long, then that's the size and how long it will be in Premiere Pro.  When you replace the media in Premiere, you can double click on the MR Control in the EGP and it will open up a sequence with your replaced media. It is in this state that you can "fill" the 10-second time-container that is determined by the MR Control. You can cut clips or time-stretch clips to "fill" this time. If you add a clip that is too short, the last frame will just hold for as long as it takes to fill the time container.  Alternatively, you can also add Responsive Design-Time to the primary comp before exporting the mogrt it sounds like you have some additional animations that you need to create these transitions. This means that the whole mogrt becomes time-stretchable / -squishable in Premiere, i.e. you can make the mogrt 3 seconds instead of 10 seconds. The caveat here is that time containers that were created by the MR Control won't re-time the replaced media or change the fact that its only 10 seconds long. This is really only a suggestion to get your animated shapes and luma mattes to align with your replaced media in Premiere.  You can use markers or the workbar to create a "Protected Region" at any point in the Primary Comp. This means that anything inside of this region will not be affected by any stretching or squishing. This will not work if there is any audio enabled in the .mogrt.    Additionally, you should be able to design this in such a way that you have two Media Replacement Controls for the first clip and one for the second clip in the same .mogrt.    I hope this was helpful! Super happy to continue the conversation or take a look at an example mogrt from you and make suggestions 🙂    Thanks so much and Happy New Year!  Dacia ... View more

Ok!  Hi @Austin James Piedra, Thanks so much for sharing your Mogrt. The issue seems to be a bug with Anchor Point controls added to the EGP from Solids, Nulls, and Adjustment Layers. 😞    Still learning more about the issue, but removing the Line Offset control makes the Mogrt work in Premiere. But you NEED the Line Offset Control you say! I added a 2D-Point Control to your Master Control layer and pickwhipped the Line Offset Anchor Point parameter to that control, which I then added to the EGP and voila!  No crash in Premiere!  I will update the channel when the fix is in, but in the meantime the 2D Point Control workaround should get you back in business.  Thanks for sharing this Mogrt!  We had been trying to hunt down the root of this crash for a few weeks and had not been able to isolate this issue.  Cheers, Dacia ... View more

Hi @MrMark1960 ... little late to this post but just gonna leave this here as an FYI to the future:  Sooo... a little bit of context for why this happens... Keyframed properties that get added to the Essential Graphics Panel as a control, lose their animation on export to Mogrt land because the control can only represent 1 value at a time. Keyframed properties by nature have multiple values so it's not technically possible for that 1 control to change values over time. The control in PR can only tell Tiny Inception AE (nested inside Premiere Pro to make Mogrts work) "make this Opacity 60" ... it can't tell Tiny Inception AE, "make the opacity go from 20 - 60 in 3 seconds from time 1 to time 4." Its a bummer for sure, but a blessing for a lot of Motion Designers that don't want their animations messed with by editors.  Its definitely a highly requested feature though and I will update the community if and when there are updates on this front.    Thanks!  Dacia ... View more